That would be too much... and you don't really need to be any more plyo's than you are already doing playing bball (which is plyometrics). I'd say once a week hitting the wrights would be fine for you with that workload. Like he said, squats, deadlifts, olympic lifts, step ups and hamstring curls are the exercises you need to focus on... and yes heavy weight with low reps focusing on explosion (Hamstring curls are single joint though and should be 8-10 rep sets). If you could keep your weight at around 185 but could squat 400+, you would be flying.

And no you do a leg session once a week and hit them hard. You do about 12-16 sets with heavy ass weight you can only do 2-6 times. Your legs will be shit sore.